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浅谈机器人激光切割头系统的研制

激光切割头是激光切割系统的关键部件,它连接到机器人手臂和光纤的远端,包括F轴聚焦自动跟踪直线运动、准直激光束单元、激光聚焦装置、防撞装置、电接口和水封、辅助气体喷嘴。


作为一个独立的开环系统,切割安装非接触式传感装置在系统中的Z轴浮动功能可以实现稳定的控制下的头,直接消除板和不均匀的焦距变化影响切割质量,与工件表面的距离保持不变,将光束聚焦到工件表面的,机器人系统的三维切割,切割头的选择必须轻便灵活,靠近喷嘴尺寸要小,使其不干扰附近的切削部分。


此外,必须密封良好,以防止灰尘和金属蒸气进入,并尽量避免碰撞以防止损坏。为了使激光聚焦在工件表面,电容器高度传感器被用于切割头喷嘴上,指令被传送到伺服系统。移动焦距透镜和喷嘴与工件表面保持一定距离。


移动机器人激光切割头的精度直接影响最终的加工精度、定位精度、和辅助气体喷嘴和激光聚焦装置的安装精度直接影响激光切割质量,必须确保在F轴直线运动的自动跟踪的重点,纵向和横向的镜头不会造成点TCP的变化,也要防止激光加工激光切割头的温度长时间的影响的技术问题的特点。


The laser cutting head is a key component of laser cutting system, connected to the robot arm and the distal end of the optical fiber, including the F axis focus auto tracking linear motion, collimated laser beam unit, laser beam focusing unit, collision protection device, electrical interface and water sealing, auxiliary gas nozzle.

As an independent open loop system, cutting head equipped with non-contact sensing device in the system under the control of Z axis floating function can achieve stable, directly eliminate plate and uneven focal length changes effect on cutting quality, keep the distance with the surface of the workpiece is constant, the beam is focused to the surface of the workpiece, the robot system the three-dimensional cutting, cutting head selection must be light and flexible, near the nozzle size should be small, making it without interference near the cutting part.

In addition, it must be well sealed to prevent dust and metal vapor from entering, and avoid collisions as far as possible to prevent damage. In order to keep the laser focused on the surface of the workpiece, the capacitor height sensor is used on the cutting head nozzle, and the instructions are sent to the servo system. The moving focus lens and nozzle keep a fixed distance from the surface of the workpiece.

The moving accuracy and positioning accuracy of robot laser cutting head directly affect the machining accuracy of the final, and the auxiliary gas nozzle and laser focusing device installation accuracy affects the quality of laser cutting, and must ensure that the focus on the automatic tracking of F axis linear motion, vertical and horizontal lens will not cause changes of point TCP, also need to prevent long time in laser processing laser cutting head temperature influences the characteristics of the technical problems.


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关键词:合肥激光切割加工  合肥激光切割钣金加工  合肥钣金加工  合肥碳钢板加工  合肥不锈钢切割  合肥钢板切割  合肥碳钢板切割  合肥大型激光切割加工

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